Hola Bob y Brenda, I would certainly recommend visiting the north....I'm not biased at all just cos I live here in Asturias

The North covers a large piece of ground and includes some wonderful cities, towns and villages. On the Costa Verde you have all of Pais Vasco, Cantabria, Asturias and Galicia to explore, plus just south of the Cordillera Cantabrica are the provinces of León, Palencia, Burgos, Aragon, Navarra and La Rioja.....that should be enough to keep you busy for a few years

We have spent some time this summer in Galicia and I can recommend a visit to Ortigueira in A Coruña and Guiteriz in Lugo (free electricity at the Area de Servicios) there is a good restaurant only a few minutes walk from the Area and the Menu del Dia is spot on and at €9 you can't go wrong I can supply GPS co-ordinates if it helps.
Cheers
Phil